The martyrs have been portrayed on the big screen several times. Some of the noted films include "Shaheed-E-Azam" (2002), "Shaheed" (2002), "The Legend of Bhagat Singh" (2002) and "Rang De Basanti" (2006).

Here's what the celebrities tweeted:

Sudhir Mishra: The thing to remember about Bhagat Singh, Rajguru and Sukhdev was that along with the passion, they had an extremely evolved sense of political thought.